<!-- Do not edit this file. It is automatically generated by API Documenter. --> [`FileSystemAdapter`](FileSystemAdapter) › [`writeBinary`](FileSystemAdapter/writeBinary) ## FileSystemAdapter.writeBinary() method **Signature:** ```typescript writeBinary(normalizedPath: string, data: ArrayBuffer, options?: DataWriteOptions): Promise<void>; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | <code>normalizedPath</code> | <code>string</code> | | | <code>data</code> | <code>ArrayBuffer</code> | | | <code>options</code> | [`DataWriteOptions`](DataWriteOptions) | _(Optional)_ | **Returns:** `Promise<void>`